Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Monday, July 6, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 6:38 pm (0.7 ft)
Next high tide : in 4h 49m at 12:46 pm (2.9 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:20 am
Moon phase : Third Quarter (62% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Aug 2061

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon8:182.88:393.42:360.32:060.25:428:02Full Moon1Mon
2Tue8:572.99:163.43:080.22:470.25:438:01Full Moon2Tue
3Wed9:373.19:543.33:350.13:260.25:448:00Waning Gibbous3Wed
4Thu10:183.210:353.24:020.14:080.35:457:59Waning Gibbous4Thu
5Fri11:023.311:203.14:320.04:530.35:467:57Waning Gibbous5Fri
6Sat11:503.35:070.05:460.45:477:56Waning Gibbous6Sat
7Sun12:092.912:413.45:500.16:530.55:487:55Third Quarter7Sun
8Mon1:042.81:363.46:410.28:210.65:497:54Third Quarter8Mon
9Tue2:032.62:373.47:390.29:480.55:507:52Third Quarter9Tue
10Wed3:102.63:483.48:460.310:590.45:517:51Waning Crescent10Wed
11Thu4:232.65:013.510:050.211:580.35:527:50Waning Crescent11Thu
12Fri5:312.86:043.611:220.15:537:48Waning Crescent12Fri
13Sat6:303.07:003.812:520.112:260.05:547:47Waning Crescent13Sat
14Sun7:233.37:503.81:400.01:23-0.15:557:46New Moon14Sun
15Mon8:133.48:373.82:25-0.12:15-0.25:567:44New Moon15Mon
16Tue9:003.59:213.73:05-0.23:02-0.15:577:43New Moon16Tue
17Wed9:453.610:023.43:40-0.13:450.05:587:41Waxing Crescent17Wed
18Thu10:293.510:433.24:100.04:250.25:597:40Waxing Crescent18Thu
19Fri11:123.311:232.94:360.15:050.46:007:38Waxing Crescent19Fri
20Sat11:563.25:010.35:490.66:017:37Waxing Crescent20Sat
21Sun12:052.612:393.05:320.56:440.86:027:35First Quarter21Sun
22Mon12:492.41:242.86:110.67:560.96:037:34First Quarter22Mon
23Tue1:372.22:152.76:590.89:141.06:047:32First Quarter23Tue
24Wed2:322.13:202.67:570.910:240.96:057:31First Quarter24Wed
25Thu3:442.14:392.79:090.911:200.86:067:29Waxing Gibbous25Thu
26Fri4:582.25:372.810:350.86:077:28Waxing Gibbous26Fri
27Sat5:502.46:203.012:080.711:37 AM0.66:087:26Waxing Gibbous27Sat
28Sun6:312.66:583.212:490.512:250.46:097:25Waxing Gibbous28Sun
29Mon7:102.87:333.31:250.31:090.36:107:23Full Moon29Mon
30Tue7:493.18:103.41:580.21:510.16:117:21Full Moon30Tue
31Wed8:283.38:483.52:270.02:320.06:127:20Full Moon31Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8459338)

Common Questions About Block Island, RI Tides

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What time does the tide turn (slack tide) in Block Island, RI today?

Slack tide in Block Island, RI is approximately 3:42 pm — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Block Island, RI?

Block Island, RI is currently in a transitional phase. Tonight's moon is 62% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are shifting between spring and neap.

What datum are Block Island, RI tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Block Island, RI?

Tide predictions for Block Island, RI come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Block Island, RI?

Tide data for Block Island, RI is sourced from NOAA Station #8459338. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8459338.

What is the moon phase in Block Island, RI tonight?

Tonight the moon over Block Island, RI is Third Quarter (62% illuminated). This places Block Island, RI in a transitional tide cycle, so tidal ranges are shifting between spring and neap this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA